Global Patent Index - EP 1014119 A1

EP 1014119 A1 2000-06-28 - DICHROIC POLARISER

Title (en)

DICHROIC POLARISER

Title (de)

DICHROISCHER POLARISATOR

Title (fr)

POLARISEUR DICHROIQUE

Publication

EP 1014119 A1 (EN)

Application

EP 98940724 A

Priority

  • RU 9800251 W
  • RU 97113613 A

Abstract (en)

The invention belongs to polarizing devices and can be used in lighting equipment, manufacturing construction-material glasses, and in displays. The proposed dichroic polarizer includes a substrate and at least one layer dichroically absorbing electromagnetic radiation, into which two reflecting coatings are introduced, at least one of which is made partially transmitting. The layer dichroically absorbing electromagnetic radiation is located between the reflecting coatings. The materials and thicknesses of layers of both the dichroically absorbing electromagnetic radiation and the reflecting coatings are selected from the requirements to obtain, at the exit of the dichroic polarizer, an interference minimum for the absorbing component of electromagnetic radiation for, at least, one wavelength value. The invention leads to increasing efficiency of dichroic polarizers at the expense of increasing degree of polarization of electromagnetic radiation leaving the polarizer, while high transmission (reflection) coefficient for the non-absorbed component is preserved 5 formulas, 3 illustrations.

IPC 1-7 (main, further and additional classification)

G02B 5/30

IPC 8 full level (invention and additional information)

G02B 5/30 (2006.01)

CPC (invention and additional information)

G02B 5/3033 (2013.01)

Designated contracting state (EPC)

CH DE FR GB IT LI NL SE

EPO simple patent family

EP 1014119 A1 20000628; EP 1014119 A4 20011212; EP 1014119 B1 20051102; CN 1109903 C 20030528; CN 1271422 A 20001025; DE 69832185 D1 20051208; DE 69832185 T2 20060803; JP 2001512845 A 20010828; JP 3792510 B2 20060705; RU 2124746 C1 19990110; US 6942925 B1 20050913; WO 9908140 A1 19990218

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